Petrolisthes galathinus

Datasheet

General Description

The Porcelain Crab, scientifically known as Petrolisthes galathinus, is a peaceful invertebrate commonly found throughout the tropical oceans globally. It features a flat, round body with two prominent front claws and distinctive feather-like maxillipeds that aid in filtering water for food.

Aquarium Suitability

Suitable for marine aquariums, Porcelain Crabs are peaceful creatures ideal for reef tanks. They live harmoniously in pairs, preferring the security of rocks for shelter and feeding. They are compatible with a reef environment and do not pose a threat to other tank inhabitants.

Demands, Care and Hardiness

These crabs are easy to care for, requiring an aquarium with ample live rock for hiding and filtering food. The Porcelain Crab is adaptable and hardy, thriving in stable water conditions with a pH of 8.1-8.4, a specific gravity of 1.023-1.025, and a carbonate hardness (KH) of 8-12.

Reef Suitability

Perfectly suited for reef setups, Porcelain Crabs are reef-safe and do not harm corals or other invertebrates. Their peaceful nature makes them a valuable addition to a reef community, contributing to the ecosystem by filtering planktonic food from the water.

Aquarium Setup

For optimal care, set up an aquarium with suitable hiding spaces like live rocks, ensuring a peaceful environment free from aggressive tank mates. Maintain stable water parameters and supplement the tank with calcium, magnesium, iodine, and trace elements to support the health of the Porcelain Crab.

Behaviour

Porcelain Crabs exhibit peaceful behavior in the aquarium, typically living in pairs and scavenging for both planktonic and meaty food. They add interest to the tank as they filter feed and explore their surroundings cautiously.

Feeding and Diet

As carnivorous filter feeders, Porcelain Crabs primarily filter planktonic food from the water but also scavenge for meaty treats. Offer them small pieces of fish, shrimp, or specialized filter feeder foods to ensure a balanced diet and optimal health.

Dimorphism and Captive Reproduction

Male and female Porcelain Crabs may exhibit subtle differences in size and claw shape. In a captive setting, reproduction is possible under favorable conditions, with females carrying and releasing larvae into the water to complete their life cycle.

Habitat and Distribution

The Porcelain Crab is commonly found in tropical oceans worldwide, often residing within or under rocks in shallow waters. Their distribution spans various regions, where they play a significant role in marine ecosystems as filter feeders and peaceful inhabitants.